How can I determine the post-critical load of a structural system with a post-critical analysis?

Answer

There is currently no direct way to determine the post-critical load. It is important that there are also several different states, and thus that there can be several local post-critical loads.

You can assign load increments to the structure and retroactively view the individual load increments, and thus find a load factor close to the post-critical failure (depending on the number of load increments).

In the attached model, 20 load increments and saving of the intermediate results have been set (Figure 01). Figure 02 shows Load Increment 10 as the last load increment before the post-critical failure, and Figure 03 shows the first load increment after the post-critical failure, whereby the deformation is significantly higher.

Keywords

Post-critical failure Post-critical analysis Post-critical load

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